Should I Change My Book?

As I’ve grieved my father’s recent death, I’ve thought about updating my book. Not right away. Maybe I’m just trying to get my mind off his passing. Still, please help me decide.

Here’s the thing: my blog subtitle reads “Love, Learn & Live with Bipolar Disorder,” and my book title is Blogging for Bipolar Mental Health.
Though I consider myself a mental health advocate, I write about what is happening in my life. I don’t just write about living with bipolar disorder. I have it, but it’s not the focus of my daily life.
My blog began when my father-in-law was in sepsis over four years ago. My worries over his health crisis and how it would affect my husband triggered hypomania. So, I wrote. I wrote to cope with hypomanic symptoms. To gain control over racing thoughts. To allay anxiety.
As the years passed, I’ve written about raising my son, my mother’s stroke, and my father’s dementia. Most recently, I’ve been writing about grief.
The grief takes me in waves. I’ve been crying more and more often as time passes. Still, it’s been a healthy grief. My medication, psychotherapy, family and support systems help me stay stable.
Grief can trigger worsening of mental illness and can lead to situational depression. But, so far I’ve been mourning my father’s death well, or so I think (perhaps I’m just well defended).
What you you think? When I feel up to it, should I update my book, adding content written since September 2017? Should I change the title and cover to more accurately reflect the content written? What are your thoughts? Any suggestions?